Ore-concentrator belt



(N0 Mbdel.)

J. M. ADAMS. ORE OONGENTRATOR BELT.

No. 409,092. Patented Aug. 13, 1889.

UNITED STATES PATENT OFFICE.

JOHN M. ADAMS, OF SAN FRANCISCO, CALIFORNIA.

ORE-CONCENTRATOR BELT.

SPECIFICATION forming part of Letters Patent No. 409,092, dated August 13, 1889.

' Application filed April 24, 1389. Serial No. 308,480. (No model.)

To aZZ whom it may concern:

Be it known that I JOHN M. ADAMS, of the city and county of San Francisco, State of California, have invented an Improvement in Ore-Concentrator Belts; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to that class of oreconcentrators in which an endless traveling belt is employed, and it relates particularly to the belts themselves.

My invention consists in the hereinafterdescribed novel construction of the surface of the belt.

The object of my invention is to increase the concentrating capacity of said belt.

Referring to the accompanying drawings for a more complete explanation of my invention, Figure 1 is a perspective view of my belt. Fig. 2 is a cross-section of the same.

I have not deemed it necessary herein to illustrate the machine upon which the belt is mounted, as such is well known.

A is my belt, formed of rubber or other suitable material and provided with raised side flanges a.

The surface of the belt, instead of being smooth, as is usually the case, is made undulating, this result being obtained by forming or fashioning the surface of the belt with gentle continuous concaves and intervening continuous ridges, both extending in the direction of the flow of material upon the belt. The concaves a are formed with slight curves, and the ridges a have but little height and width, so that the prominent feature of the surface is the gentle continuous concave runs or ways. The object of this construction is to allow the sulphurets and heavier portions of the material under treatment to fall rapidly and positively to the lowest portions of the depressions or concaves, thereby effecting a more complete and rapid separation or concentration, and consequently increasing the capacity of the belt. The whole surface of the table formed by the belt, ridges and all, except at the head, is covered with the ore pulp and water and the sulphurets readily find the lower portions without interference.

I am aware that concentrator-belts have been made wholly corrugated transversely to the flow of the material and also partially corrugated transversely; and Iam also aware that belts have been made with flanges extending longitudinally, so as to divide the surface of the belt into parallel flat-bottom runs or ways; and, further, that belts have been made with indentations and depressions in their surfaces; butI do not claim any of these, nor a belt having a corrugated, riffied, roughened, indented, or sluiced surface; but

What I do claim as new, and desire to secure by Letters Patent, is-

A concentrator belt having its surface formed with or divided into continuous parallel concave runs or ways extending throughout the belt in the direction of the flow of material on said belt, substantially as described.

In witness whereof I have hereunto set my hand.

JOHN M. ADAMS.

WVitnesses:

S. H. NOURSE, J. H. BLooD. 

